The HS8S from Yamaha is an 8” bass-reflex powered subwoofer designed to deliver low frequencies down to 22Hz. HS Series speakers were designed to give you the most honest, precise reference possible, providing an ideal sonic platform to build on throughout the mixing process. By combining acquired knowledge and expertise with state-of-the-art sound technologies, Yamaha's speaker engineering team have examined, then optimized, every aspect that has contributed to making these monitors the most trusted in the business. The HS8S’s high-power amplifier delivers 150W of power to the low-frequency transducer. Tailor its sound with the Low Cut switch, Low Cut control, and High Cut control. The HS8S has XLR and TRS phone jack outputs and XLR for L, R, and Ext Sub.Features8" bass-reflex powered subwoofer150W power22Hz - 150Hz frequency responseXLR and TRS phone jack outputs and XLR for L, R, and Ext Sub.Low Cut switch, Low Cut control, and High Cut controlSpecificationsSpeaker type Powered subwooferFrequency Range (-10dB) 22Hz - 160HzComponents LF: 8" coneOutput power: 150WI/O connectors INPUT: XLR3-31 type (balanced) x2, PHONE (balanced) x2 / OUTPUT: XLR3-32 type (balanced) x2 (L&R), XLR3-32 type (balanced) x1 (EXT SUB)Power consumption 70WShape Bass-reflex typeCabinet material MDFDimensions W 11.8" x H 13.8" x D 15.3"Net weight 12.5kg (27.6 lbs.)Others LEVEL control, PHASE switch : NORM./REV., HIGH CUT control (80-120Hz, center click), LOW CUT control (80-120Hz, center click), LOW CUT switch (ON/OFF) Yamaha HS8S 8 Active Studio Monitor Subwoofer.